State profile · Above national median SD

North Dakota bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in North Dakota — drawn straight from the FHWA National Bridge Inventory.

4,242
Public bridges
39.7%
Good condition
10.8%
Poor condition
10.8%
Structurally deficient

Total Bridges

4,242

Public highway bridges in North Dakota

Good Condition

39.7%

1,685 bridges rated 7-9

-10.3pp vs 50% benchmark

Poor Condition

10.8%

460 bridges rated 0-4

Structurally Deficient

10.8%

460 bridges flagged for repair priority

3.9pp vs national avg 7.0%

North Dakota vs national bridge condition

North Dakota — Good condition share 39.7%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

North Dakota — Structurally deficient share 36.1%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — North Dakota (FHWA NBI)

North Dakota39.72182932578972%42.5978312116926%10.843941537010844%10.843941537010844%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — North Dakota (FHWA NBI)

Counties (53)

Adams 45 Barnes 79 Benson 40 Billings 60 Bottineau 120 Bowman 68 Burke 29 Burleigh 113 Cass 369 Cavalier 66 Dickey 43 Divide 13 Dunn 74 Eddy 27 Emmons 67 Foster 19 Golden Valley 34 Grand Forks 334 Grant 60 Griggs 21 Hettinger 64 Kidder 10 LaMoure 60 Logan 13 McHenry 112 McIntosh 11 McKenzie 131 McLean 57 Mercer 72 Morton 271 Mountrail 27 Nelson 23 Oliver 24 Pembina 203 Pierce 5 Ramsey 48 Ransom 35 Renville 24 Richland 197 Rolette 18 Sargent 30 Sheridan 8 Sioux 22 Slope 41 Stark 157 Steele 94 Stutsman 78 Towner 58 Traill 151 Walsh 253 Ward 123 Wells 41 Williams 100

North Dakota vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below North Dakota on the same metric.

02

Alaska

10.12% top marginal rate
Structure
Progressive
Burden @ $100K
$909

42

Pennsylvania

10.50% top marginal rate
Structure
Progressive
Burden @ $100K
$14,867
Selected

38

North Dakota

10.84% top marginal rate
Structure
Progressive
Burden @ $100K
$4,242

22

Louisiana

11.00% top marginal rate
Structure
Progressive
Burden @ $100K
$12,699

72

Puerto Rico

11.98% top marginal rate
Structure
Progressive
Burden @ $100K
$2,387

Bridges Needing Most Attention in North Dakota

Six lowest-condition bridges in North Dakota, ranked by composite NBI rating. Each is inspected at least every 24 months.

TRAIL

Structurally Deficient

Over: CYPRESS CREEK

5 NORTH 1 EAST OF CALVIN, Cavalier, ND

Built 1950 Load: 0.9 t ADT: 2

COUNTY HIGHWAY

Poor

Over: CREEK

2 WEST 6 SOUTH OF VANG, Cavalier, ND

Built 1953 Load: 0.9 t ADT: 2

COUNTY ROAD

Structurally Deficient

Over: JAMES RIVER

NORTH OF LAMOURE, LaMoure, ND

Built 1910 Load: 1.1 t ADT: 50

COUNTY HIGHWAY

Poor

Over: ANTELOPE CREEK

2 SOUTH 3 WEST DWIGHT, Richland, ND

Built 1920 Load: 1.1 t ADT: 20

COUNTY HIGHWAY

Structurally Deficient

Over: LITTLE MUDDY RIVER

2 WEST 3 SOUTH ALAMO, Williams, ND

Built 1920 Load: 1.5 t ADT: 24

COUNTY HIGHWAY

Structurally Deficient

Over: LITTLE MUDDY RIVER

1 EAST 3 SOUTH ALAMO, Williams, ND

Built 1920 Load: 1.5 t ADT: 20

All Bridges in North Dakota

COUNTY HIWAY 3918

Unknown

Over: I-29/GALCHUTT INT

9 NORTH OF ND 13, Richland, ND

Built 1973 ADT: 5,200

COUNTY HIGHWAY

Unknown

Over: I-29/PITCAIRN SEPARATION

12 NORTH OF ND 13, Richland, ND

Built 1973 ADT: 5,200

COUNTY HIWAY 3912

Unknown

Over: I-29/COLFAX INTERCHANGE

11 SOUTH OF ND 46, Richland, ND

Built 1973 ADT: 5,600

COUNTY HIGHWAY

Unknown

Over: I-29/COLFAX SEPARATION

9 SOUTH OF ND 46, Richland, ND

Built 1973 ADT: 5,600

COUNTY HIGHWAY

Unknown

Over: I-29/MILE 41 SEPARATION

7 SOUTH OF ND 46, Richland, ND

Built 1973 ADT: 5,600

COUNTY HIGHWAY

Unknown

Over: I-29/WALCOTT INTERCHANGE

6 SOUTH OF ND 46, Richland, ND

Built 1974 ADT: 5,600

COUNTY HIGHWAY

Unknown

Over: I-29/CHRISTINE INT

4 SOUTH OF ND 46, Richland, ND

Built 1973 ADT: 6,400

ND HIGHWAY 46

Unknown

Over: I-29/KINDRED INTERCHANGE

JUNCTION ND 46 & I-29, Richland, ND

Built 1972 ADT: 7,300

STATE AVENUE

Unknown

Over: BROADWAY ST AND RAILROAD

STATE AVENUE, Stark, ND

Built 2016 ADT: 25

US HIGHWAY 85

Unknown

Over: I-94/BELFIELD INT

JCT. OF I-94 & US 85, Stark, ND

Built 1964 ADT: 4,650

COUNTY ROAD

Unknown

Over: I-94/SOUTH HEART INT

9 EAST OF JCT. ND 85, Stark, ND

Built 2016 ADT: 5,000

HWY 22 BYPASS

Unknown

Over: I-94/HWY 22 BYPASS

5 WEST OF ND 22, Stark, ND

Built 2014 ADT: 11,000

STATE HWY/BUS. 94

Unknown

Over: I-94/WEST DICKINSON INT.

2 WEST OF ND 22, Stark, ND

Built 1964 ADT: 5,000

STATE HIGHWAY 22

Unknown

Over: I-94/ND 22 INTERCHANGE

JCT. ND 22 & I-94, Stark, ND

Built 1964 ADT: 4,850

10 AVENUE EAST

Unknown

Over: I-94/10TH AVE EAST SEP

1 EAST OF JCT. ND 22, Stark, ND

Built 1964 ADT: 4,850

COUNTY ROAD

Unknown

Over: I-94/EAST DICKINSON INT

2 EAST OF JCT. ND 22, Stark, ND

Built 1963 ADT: 5,400

COUNTY ROAD

Unknown

Over: I-94/LEHIGH SEPARATION

5 EAST OF JCT. 22, Stark, ND

Built 1963 ADT: 5,400

COUNTY ROAD

Unknown

Over: I-94/GREEN RIVER SEP

8 EAST OF JCT. 22, Stark, ND

Built 1963 ADT: 5,400

COUNTY ROAD

Unknown

Over: I-94/GLADSTONE INT.

13 WEST OF ND 8, Stark, ND

Built 1963 ADT: 4,850

INTERSTATE 94

Unknown

Over: BNRR SEPARATION/MINOR RD

12 WEST OF ND 8, Stark, ND

Built 1962 ADT: 2,425

INTERSTATE 94

Unknown

Over: BNRR SEPARATION/MINOR RD

12 WEST OF JCT. ND 8, Stark, ND

Built 1963 ADT: 2,425

COUNTY HIGHWAY

Unknown

Over: I-94/HEART RIVER SEP

9 WEST OF JCT. ND 8, Stark, ND

Built 1963 ADT: 4,850

COUNTY ROAD

Unknown

Over: I-94/TAYLOR INTERCHANGE

6 WEST OF JCT ND 8, Stark, ND

Built 1963 ADT: 4,700

COUNTY ROAD

Unknown

Over: I-94/GRANDVALE SEP

3 WEST OF JCT ND 8, Stark, ND

Built 1963 ADT: 4,700

ND HIGHWAY 8

Unknown

Over: I-94/MOTT-RICHARDTON INT

JCT. I-94 & ND 8, Stark, ND

Built 1962 ADT: 4,550

COUNTY HIGHWAY

Unknown

Over: I-94/YOUNGMANS BUTTE

3 EAST OF JCT. ND 8, Stark, ND

Built 1962 ADT: 4,550

COUNTY HIGHWAY

Unknown

Over: I-94/ANTELOPE INTERCHNG

5 EAST OF JCT. ND 8, Stark, ND

Built 1962 ADT: 4,550

COUNTY HIGHWAY

Unknown

Over: I-94/LONG BUTTE SEP

7 EAST OF JCT. ND 8, Stark, ND

Built 1962 ADT: 4,550

COUNTY ROAD

Unknown

Over: I-94/COUNTY LINE SEP

10 EAST OF ND 8, Stark, ND

Built 1961 ADT: 2,275

COUNTY ROAD

Unknown

Over: I94/COUNTY LINE SEP

10 EAST OF ND 8, Stark, ND

Built 1961 ADT: 2,275

RAILROAD DR & BNSF

Unknown

Over: BNSF RAILROAD UNDERPASS

4TH AVE. NE-JAMESTOWN, Stutsman, ND

Built 1917 ADT: 9,100

INTERSTATE 94

Unknown

Over: MINOR ROAD SEPARATION

4 WEST OF ND 30, Stutsman, ND

Built 1958 ADT: 3,150

INTERSTATE 94

Unknown

Over: MINOR ROAD SEPARATION

4 WEST OF ND 30, Stutsman, ND

Built 1958 ADT: 3,150

ND HIGHWAY 30

Unknown

Over: I94/STREETER INTERCHANGE

JCT ND 30, Stutsman, ND

Built 2022 ADT: 6,488

COUNTY HIGHWAY

Unknown

Over: I94/MEDINA INTERCHANGE

2 EAST OF ND 30, Stutsman, ND

Built 2009 ADT: 6,500

INTERSTATE 94

Unknown

Over: HALFWAY LAKE INTERCHANGE

5 EAST OF ND 30, Stutsman, ND

Built 1958 ADT: 3,300

INTERSTATE 94

Unknown

Over: HALFWAY LAKE INTERCHANGE

5 EAST OF ND 30, Stutsman, ND

Built 1958 ADT: 3,300

COUNTY HIGHWAY

Unknown

Over: I-94/WEST CLEVELAND SEP

9 EAST OF ND 30, Stutsman, ND

Built 1958 ADT: 6,600

INTERSTATE 94

Unknown

Over: CLEVELAND INTERCHANGE

10 EAST OF ND 30, Stutsman, ND

Built 1958 ADT: 3,450

INTERSTATE 94

Unknown

Over: CLEVELAND INTERCHANGE

10 EAST OF ND 30, Stutsman, ND

Built 1958 ADT: 3,450

COUNTY HIGHWAY

Unknown

Over: I-94/WINDSOR INTERCHANGE

15 WEST OF JAMESTOWN, Stutsman, ND

Built 1959 ADT: 6,900

COUNTY HIGHWAY

Unknown

Over: I-94/OSWEGO INTERCHANGE

13 WEST OF JAMESTOWN, Stutsman, ND

Built 1959 ADT: 6,900

COUNTY HIGHWAY

Unknown

Over: I-94/LIPPERT TWP INT

9 WEST OF JAMESTOWN, Stutsman, ND

Built 1959 ADT: 6,900

COUNTY HIGHWAY

Unknown

Over: I-94/ELDRIDGE TWP INT

6 WEST OF JAMESTOWN, Stutsman, ND

Built 1959 ADT: 7,500

US 52 BYPASS

Unknown

Over: I 94/US 52 BYPASS

2 WEST OF JAMESTOWN, Stutsman, ND

Built 1959 ADT: 8,500

I-94 OFF RAMP

Unknown

Over: I-94/WEST JAMESTOWN INT

1 WEST OF US 281, Stutsman, ND

Built 1957 ADT: 6,000

US HIGHWAY 281

Unknown

Over: I-94/US 281 INTERCHANGE

JCT US 281 & I-94, Stutsman, ND

Built 1957 ADT: 6,800

INTERSTATE 94

Unknown

Over: HOSPITAL ROAD SEPARATION

1 EAST OF US 281, Stutsman, ND

Built 1957 ADT: 3,400

INTERSTATE 94

Unknown

Over: HOSPITAL ROAD SEPARATION

1 EAST OF US 281, Stutsman, ND

Built 1957 ADT: 3,400

INTERSTATE 94

Unknown

Over: BNRR & SE JAMESTOWN INT

SE JAMESTOWN INTERCHANGE, Stutsman, ND

Built 2017 ADT: 4,100

Showing 201-250 of 4,242 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.